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首页> 外文期刊>Revista Brasileira de Engenharia Agricola e Ambiental >Methods of soil sampling in areas under no-tillage in the Southwest Goiás
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Methods of soil sampling in areas under no-tillage in the Southwest Goiás

机译：戈亚斯州西南部免耕区土壤取样方法

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> size="2" face="Verdana, Arial, Helvetica, sans-serif">Soil sampling is the first and fundamental step in an evaluation program of soil fertility, and the recommendation of lime and fertilizer is defined through the interpretation of the results of chemical analysis of the sample. With the objective of evaluating the results of the chemical analysis of the soil as a function of the sampling method, soil samples were collected from 12 different areas that have been under no-tillage system for 2, 5 and 10 years. The Ducth auger hole and the electric drill were used to collect the soil samples at 3 different positions and 2 depths, evaluating the soil fertility as a function of time of the direct planing system. There was an increment of P in areas with 10 years under no-tillage system in comparison with the others areas. The values of Ca, Mg, P, K, pH, CTC and V showed concentration gradient as a function of time of no tillage, superficial application of lime and fertilization in the planting rows. The sampling equipment influenced the results of soil analysis, and all macronutrients except S and all micronutrients, showed higher values when soil was sampled with the electric drill.
机译：> size =“ 2” face =“ Verdana，Arial，Helvetica，sans-serif”>土壤采样是土壤肥力评估程序中的第一步和基本步骤，通过以下方法定义了对石灰和肥料的建议：解释样品的化学分析结果。为了评估土壤化学分析结果与采样方法之间的关系，我们从12个不同的免耕系统中分别收集了2、5和10年的土壤样品。使用Ducth螺旋钻孔和电钻在3个不同的位置和2个深度处收集土壤样品，评估土壤肥力与直接刨床系统时间的关系。与其他地区相比，免耕制度下有10年耕作的地区P含量增加。 Ca，Mg，P，K，pH，CTC和V的值显示出浓度梯度随耕作时间，生石灰表层施肥和种植行施肥时间的函数。采样设备影响土壤分析结果，当用电钻对土壤进行采样时，除S和所有微量元素外的所有常量营养素均显示出较高的值。

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